Ventilator.



E. ROSEQHBIM. VENTILATOB. APPLICATION FILED JULY 16,1910. 1,01 1,494. Patented Dec. 12, 1911.

2 SHEETS-SHEETl.

W M! H! INVENTOR v filamfl ase/zfieilfiu vi-messes v BY I I E. ROSENHEIM.

VENTILATOR.

APPLIOATION FILED JULYlS, 1910.

Patented Dec. 12, 1911.

2 SHEETS-SEEET 2.

I N v E N rd R Ema/)2 Fuse/#462270.

WITNESSES BY 0W ATTORNEY UNITED s'r rEs PATENT OF I E,

ERvIN nosnnnnm, or .rHILanELrn-IA, rENnsYnvANIL- VENTILATOB.

immea- Specification of Letters Patent.

Application filed July 16, 1910. Serial No. 572,270. f 1 j To all whom it may COTLCQT'IR Be itknown that I, Envm ROSENHEDI, a citizen of the United States, and a resident of the city of Philadelphia, in the county. of Philadelphia and State of Penn'- sylvania, have invented certain new and u seful Improvements in ventllators, of

which the following'is a specification, referen'ce being had to the accompanying draw- This invention particularly'relates to that class'of ventilators which are applicable to railway cars orsimilar vehicles.

1 The form of this invention hereinafter described provides acar with a plurality of ventilators, each comprising a casing preferably in the form ofa cylindrical quadrant opening into the car, and having ports in each of its longitudinal plane walls, and provided with a rhonibohedral extension forming an obliquely depending duct extending through the floor of'said car from one longitudinal wall of said casing, and opening exterior to said car; a sliding gate having angularly disposed wings mounted for reciprocation in said casing and provided withapertures which are registerable with is a partial side elevation and fragmentarysectional new of a railwaycar, embodylng a; convenient application of this invention; Fig. 2 1s a perspective view of a ventilator "unit showing the form of this invention which is adapted to direct air through the car floor; Fig. 3 is 'a fragmentary end elevation of the. ventilator unit which is adapted to direct Piir through the top of the car; Fig. 4: is a'transverse vertical sectional view of the ventilator unit shown in Fig. 2, taken on the line 4t-4 of Fig. 5; and Fig. 5 is a vertical longitudinal sectional view of the ventilator unit shown in Fig. 2 taken on the line 55 of Fig. 4. I

In said figures, the car 10 comprises the floor 11, the main roof 12 and the superroof 13. Said car is provided with the seats 14, one being located at each window 1-5 and below each transom opening 17, which ,are normally provided dows 18, between'said mainnorexia superroof. Beneath each seat lap isdisposed a.

ventilator unit 20, which, bestshojwndn lugs. 2 to 5 inclusive, nclud sa quadro cylindric casing 21, co pmang the curved wall 22 and the adjacent plane angularly disposed walls 23 and 24:, respectively5hav-- ing elongated ports 25 and26'for thepas sage of air therethrough;*Thewall' 23"is in unitary relation with theicurved wall 2 2, and the wall 24, is formed, ofaseparate plate, preferably of sheet ni'etaL; SaidQCa s ing 21 is provided with an air duct est-f rhoniboidal form, havinga flange 29 which is joined with the casing 21 by the turned 'over flange 30 of said casing; Said'fiange 30 also embraces the projectingedgesof the wall 24, which forms a diaphragm vbetween said casing 21 and duct 28. The ventilator 20 is regulated and controlledby theislidegate 31 comprising the angularly disposed wings 32 and 33, and is mounted for reciprocation within said easing,and inaintained in position by-the angle flanges 34 and Patented Dec. 12),;

slidably engaging the. free. edges of therespective wings 32 and 33.. Said wings 32 and 33 are respectivelyprovided with apertures 37 and 38, which are arranged to reg-v ister with the ports 25 and 26 respectively, when the ventilator is opened to its maximum extent, and to be shifted outof registry to close said ports. 7 i v The wing 32 is provided with'the l'mob 40 whose shank 41 extends through the slot-s42 in the wall 23 of the casing, said slot 42 being of such length as to lirnit the move ment of the slide-gate 31, so that" when said gate is shifted to the limit'of its movement in the direction of the arrow indicated in Fig 3,- the shank 4:1 will'engage the'right I hand end of the slot 4:2 as shown in Fig. 2 to register the apertures 37,and 38 with the respective ports 25 and 2 6, and whens'hifted in a direction opposed to that indicated by the arrow in said figure, said shank it will engage the left hand endof said sIOtQand limit the movement of the.- gatef 3 1' 'insuch position that the ports 25' and 26jwill be closed by the web of the respective wings The ventilator units 45 shown in Fig. 3

are each provided with a flange 4:6, and are adapted to be inserted in the transom openings '17, between the main-roof 12 and the super-roof 13, as best shown in Fig. 1, w1th their flanges 46 secured to the jambs 47 ofand the ventilators which are disposed under opposite seats having their air ducts 28 disposed 1n opposite directions.

In the normal operation of the ventilating system herein described, the ventilators 20 having their air ducts 28 depending toward the direction of movement of the car, may

have their slide gates 31 closed, and the yen tilators having their air ducts 28 extending rearwardly with respect to the direction of movement of the car, having their slide gates 31 opened, so that, as may be readily seen, an outward draft is created in the ducts 28. This draft is effected by the rapid movement of the outlets of the rearwardly inclined ducts, projecting beyond the car flooring, through the air exterior thereto. to effect the drawing of the foul air from the interior of the car through the ventilators beneath alternate seats, and beneath the seats in staggered relation at the opposite sides of said car.

It may be here noted that by drawing the foul air from the bottom of the ear effects a corresponding inrush of fresh air through the ventilators at the top and the crevices in the sides of the car, and the fresh air thus admitted is uniformly circulated and finally drawn out through the ventilators at the bottom of the car. together with the heavier gases which normally settle at the floor, so that it is obvious that the more poisonous gases are permitted to escape directly through the car floor where they normally collect. and their circulation in the upper strata is thus avoided.

\Vhile the theory of the air circulation within a car equipped with this type of ventilator is not positively known, it is believed that air is admitted at the top and emitted at the bottom because of two principal factors. These factors, briefly stated, are, the projection of the air ducts below the lowermost portion of the car floor, which causes a downward deflection of the air currents impeding thereagainst, and a consequent drawing of the car air therethrough; and, secondly, the greater extent of the sides of the floor ducts opposed to the external air currents when compared with the relatively narrow end walls of the ducts of the ventilators adjacent to the ceilin It is not desired to limit this invention to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made therein without departing from the essen tial features of the invention as defined in the appended claims.

Having thus described my invention, I claim:

1. A. ventilator comprising a casing sai stantially triangular in cross section having its adj acent walls provided respectively with inlet and outlet ports, and a slide-gate having angularly disposed wings operative to close said ports simultaneous]y and provided with apertures registerable therewith the side opposite said adjacent walls, serving to direct a draft from said inlet ports to said outlet ports.

2. A ventilator comprising a sectoral casing having its adjacent walls provided with ports, a slide-gate having an gularly disposed wings operative to close said ports simultaneously and provided with apertures registerable therewith, and an obliquely extending duct depending from said casing.

A ventilator comprising a quadro-cylindrie casing having ports in its longitudinal plane walls, a duct depending from said casing operative to direct air therefrom, a slide-gate having wings operative to close said ports and provided with apertures registerable therewith.

4:, A ventilator comprising a quadro-cylindric casing. having ports in its longitudinal plane walls, a duct depending oblique y from said. asing operative to direct a current. of air, a slide-gate having wings operative to close said ports and provided with apertures registerable therewith said duct terminating in a plane parallel to the line of motion.

In witness whereof, I have hereunto set my hand this first. day'of July, A. D. 1910.

ERVIN ROSENHEH'I.

lVitnesses CLIFTON C. HALLownLL, ALEXANDER PARK.

It is hereby certified that in Letters Patent No. 1,011,494, granted December 12, 1911, upon the application of Ervin Rosenheim, of Philadelphia, Pennsylvania. for an improvement in Ventilators, an error appears in. the printed specification requiring correction as follows: Page 2, line 86, for the word operativefi-read cooperative; and that the said Letters Patent should be read with this'eorreetion therein that the same may conform to the record of the case in the Patent Ofiice.

Signedand sealed this 30th day of January, D., 1912.

0. e. BILLINGS,

[SEAL] Acting Omnmissz'onef of Patents. 

